文摘在燃料电池中,碳基氧还原反应(ORR)催化剂被认为是昂贵的铂基催化剂的潜在替代品。近年来,由过渡金属和氮原子共掺杂的碳基材料(M-N-C)以其低成本和优异的活性而受到研究人员的广泛关注。在此,通过精心设计的杨桃状MOF (ZIF-8@ZIF-67)为前驱体,采用简单的一步热解法制备钴、氮共掺杂多孔炭材料(命名为Co-N@CNT-C800)。CoN@CNT-C800产生了大量碳纳米管(CNT),独特的三维结构保证了较高的比表面积和孔隙率,有利于ORR的传质和电子传递。同时,Co-N@CNT-C800在碱性介质中表现出优异的半波电位和极限电流密度,分别为0.841 V和5.07 m A·cm^(-2)。此外,与商用Pt/C材料相比,Co-N@CNT-C800还表现出优异的电化学稳定性和耐甲醇毒性。该策略为制备低成本、高活性的能量转换电催化剂提供了一种有效的方法。
基金supported by National Natural Science Foundation of China(22108306)Taishan Scholars Program of Shandong Province(tsqn201909065)Shandong Provincial Natural Science Foundation(ZR2021YQ15,ZR2020QB174)。
基金This work was financially supported by the Natural Science Foundation of China(21925110,21890751,91745113)the National Program for Support of Top-Notch Young Professionals+9 种基金USTC Research Funds of the Double First-Class Initiative(YD2060002004)the Key R&D Program of Shandong Province(2021CXGC010302)the Major Program of Development Foundation of Hefei Center for Physical Science and Technology(2016FXZY001)the Users with Excellence Project of Hefei Science Center CAS(2021HSCUE004)the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB36000000)the Anhui Provincial Natural Science Foundation(1808085MB26)The authors also appreciate the support from the beamline 1W1B of Beijing Synchrotron Radiation Facility(BSRF,Beijing,China)the beam-lines BL11U,BL10B,and BL12B-a of National Synchrotron Radiation Laboratory(NSRL,Hefei,China)the fellowship of China National Postdoctoral Program for Innovative Talents(BX2021280)the fellowship of China Postdoctoral Science Foundation(2022M710141).
基金supported by the National Natural Science Foundation of China(No.22003033 and No.21933002)Shandong Provincial Natural Science Foundation(ZR2021QB164).
